There are many hotels out there that use the layout of 2Q room + connecting living room + 1K room.
This allows the hotel to sell the rooms individually, as a 1K suite, a 2Q suite, or a 2 bedroom suite. I know a few Sheratons have this kind of setup (although I'm blanking on which ones they were, maybe the one by the DTW airport?).
Off the top of my head, the Hyatt Regency Tamaya in NM has this kind of setup. I know of a few Hiltons that do (The Hilton Americas in Houston has it. The Anatole in Dallas, for example, has it where they even sell the living room as a "parlor room w/ Murphy bed"). Can't think of any more SPG properties though at the moment.
The thing about this kind of arrangement, is that it doesn't maximize space, so you'll be hard pressed to find it in bigger cities where space is at a premium.